Piston pin extractor and inserter



Jam. 12, 1932. M. D. JUSTISS 1,341,190

PISTON PIN EXTRACTORAND INSERTER Filed Oct. 15; 1930 2 Sheets-Sheet 1 INVENTOR ATTORNEY Jan. E2, 1932. M. D. JUSTISS 1,841,190

PISTON PIN EXTRACTOR AND INSERTER Filed Oct. 15, 1930 2 Sheets-Sheet 2 [Kara-Z622 Jzzaiz'sa INVENTOR ATTORNEY i Patented Jan. 12, 1932 r PAT ENT OFFICE MARCUS D. TUBE-I55, 0] MAGNQLIA, ARKANSAS PISTON ZPIN' EXTRAGTOB -AND INBEB'IEB' Application filed October 15, 1880. Serial No. 488,940.

. Thisi'nvention relates toan extractor and 11156112613101 piston pins, the general object of the invention being to provide a support for the piston and a part of the tool, with a threadedmember having a part passing through the pin, with means for exerting pressure against. the member and a ainst the piston so as to force the pin into t e piston' or the -pin out of the piston.

This invention also consists in certain other features of construction and in the combination and arrangement of the several partsi to be hereinafter fully described, illustrate in the accompanying drawings and specifically pointed out in the appended claim.

Indescribing the invention in detail, reference will be had to the accompanying drawings wherein like eharactersdenote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional elevation, showing the device in use.

Figure 2 is a similar view, but showing the pin removed from the piston.

Figure 3 is a section on line 3-3 of Figure 1.

Figure 4 is a view of the threaded member.

Figure 5 is a side view of the forked suport. p Figure 6 is a view of a rod used with the device.

In these views, the numeral 1 indicates a base which is formed with the upright 2 and 3. The base forms a support for the piston 6, the pin of which is to be removed or inserted. The connecting rod is shown at 5. The upright 2' has a forked end of small thickness, as shown at 7, while the upright 3 is formed with a split tubular part 8, the ends of which are enlarged and provided with threaded holes to receive a bolt 9. An elongated sleeve 10 is adapted to be placed in the tubular part 8 and clamped therein by tightening the bolt 9 and the parts are so arranged that when this is done, the opening in the sleeve will be in alignment with the pin receiving opening of the piston. An elongated member 11 is formed with an en larged intermediate part 12, a threaded part 13 and a reduced part 14 which terminates in .to be placed in the sleeve,

the threaded end 15. This member is adapted with the enlargement 12 therein and the reduced part 14 .passmg through the bore of the pin 16. A head or cap 17 1s threaded on the end 15 of the part 14 to fasten the pin between the enarged part 12 and head 17 A handle member 18 is then threaded on the part 13 and turned until it bears a ainst a thrust washer 19 fittin in a countersink 20 in the outer end of the s eeve 10. Thus the handle will bearv against the washer 19 and cause the sleeve 10 to bear against the piston and as the handle member is being rotated, it will cause the member 11 to move longitudinally away from the piston so that it will draw the piston pin therefrom, as shown in Figure 2, or if the pin is to be placed in the piston, the member 11 is passed through the hole in the piston, with t e reduced part 14 extending beyond the piston so that the pin can be placed thereon and then by operating the handle, the part 11 will be moved to force the pin into the piston. The handle member is formed with the arms 18' for facilitating its rotation and one of the arms is provided with a weight 18" which enables the handle member to be spun on the threaded part of the member 11 to quickly place it against the washer 19 or to move it outwardly on said threaded part.

The member 11 is formed with the hole 21, the member 17 with a hole 21 and the bolt 9 with the hole 22 so that a rod 23 can be placed through these holes to facilitate the turning or mani ulation of said parts. As wi lbe seen, the upright 2 has its forked end fitting between the upper end of the connecting rod and the inner wall of the piston.

It is thought from the foregoing description that the advantages and novel features of'the invention will be readily apparent. It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is A device of the class described comprising a support, a pair of uprights thereon, one of which has a forked upper end for fittin around a piston pin when a piston is place on the support, the other upright having a tubular clamp at its upper end, an elongated 5 sleeve held in the clamp and having one end M abutting the piston, a member having an enlarged part passing through the sleeve and having a reduced part for passing through a piston pin the said enlarged and reduced 1 parts formin at their junction a shoulder, a

head detacha ly connected with the end of the reduced part for holding the in over the reduced part and between sai head and shoulder, said member having its outer por- 16 tion threaded and extended beyond the sleeve and a handle member threaded thereon for exerting ressure against the sleeve and for moving t e threaded member longitudinally to force the pin into the piston or out of 20 the same.

In testimony whereof I afiix m si ature.

MARCUS D. Jhs ISS. 

